CN107149250A - A kind of photovoltaic charged cell-phone cover - Google Patents

A kind of photovoltaic charged cell-phone cover Download PDF

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Publication number
CN107149250A
CN107149250A CN201610122510.5A CN201610122510A CN107149250A CN 107149250 A CN107149250 A CN 107149250A CN 201610122510 A CN201610122510 A CN 201610122510A CN 107149250 A CN107149250 A CN 107149250A
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CN
China
Prior art keywords
circuit
photovoltaic
maximum power
power point
charging
Prior art date
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CN201610122510.5A
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Chinese (zh)
Inventor
潘加龙
郑鲁杰
陈庆威
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to CN201610122510.5A priority Critical patent/CN107149250A/en
Publication of CN107149250A publication Critical patent/CN107149250A/en

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Classifications

    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00Receptacles for purposes not provided for in groups A45C1/00 - A45C9/00
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66Regulating electric power
    • G05F1/67Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00Receptacles for purposes not provided for in groups A45C1/00 - A45C9/00
    • A45C2011/002Receptacles for purposes not provided for in groups A45C1/00 - A45C9/00 for portable handheld communication devices, e.g. mobile phone, pager, beeper, PDA, smart phone

Abstract

The invention provides a kind of photovoltaic charged cell-phone cover, it includes:Photovoltaic panel group for converting light energy into electric energy, the MPPT maximum power point tracking circuit being connected with photovoltaic panel group, charging circuit;MPPT maximum power point tracking circuit is used for the maximum power point for tracking photovoltaic panel, and the electric energy of maximum power point is exported to device battery by charging circuit.Pass through the implementation of the present invention; the integrated MPPT maximum power point tracking circuit tracing photovoltaic panel maximum power point in cell-phone cover; realize maximum power output; so charging voltage and electric current can access rational matching; the problem of photovoltaic design of existing mobile phone protective cover needs individually carrying control device is solved, meanwhile, shorten the charging interval; charge efficiency is improved, the usage experience of user is enhanced.

Description

A kind of photovoltaic charged cell-phone cover

Technical field

The present invention relates to cell-phone cover field, more particularly to a kind of photovoltaic charged cell-phone cover.

Background technology

In order to strengthen the function of cell-phone cover, prior art provides the mobile phone protective cover with photovoltaic generation, mesh The preceding mobile phone protective cover with photovoltaic generation, a kind of is directly to hand using the photovoltaic panel chosen Machine charges;Another is to utilize the control of photovoltaic generation control device photovoltaic charged, and general such controller is It is self-existent.

For the photovoltaic charged of no control device, consider it is infeasible, battery electric quantity from safety perspective Charging process, battery life are not all controlled reasonably.For there is the photovoltaic charged of control device, its Controller is all independent, and this is carried for the people that field is gone on a long journey is and its inconvenient, and controller is big Small to differ, internal circuit design is complicated, and price is high, and charge efficiency is low;If traveller forgets band, So the mobile phone protective cover with photovoltaic control function just loses its function, has been exactly band in fact such Charger, one be it volume it is big, it has not been convenient to;Two be its charging scheme inefficiency, and traveller needs length Time, which stops over, to be charged the phone.Therefore the photovoltaic design of existing mobile phone protective cover needs individually to carry control Device, it has not been convenient to which user uses.

Therefore, those skilled in the art urgently provide a kind of photovoltaic charged cell-phone cover, are protected with solving existing mobile phone The problem of photovoltaic design of sheath needs individually to carry control device.

The content of the invention

The invention provides a kind of photovoltaic charged cell-phone cover, needed with the photovoltaic design for solving existing mobile phone protective cover The problem of individually carrying control device.

The invention provides a kind of photovoltaic charged cell-phone cover, it includes:Light for converting light energy into electric energy Underlying surface plate group, the MPPT maximum power point tracking circuit being connected with photovoltaic panel group, charging circuit;Maximum power point Tracking circuit is used for the maximum power point for tracking photovoltaic panel, and the electric energy of maximum power point is passed through into the electricity that charges Road is exported to device battery.

Further, in addition to:It is arranged on the counnter attack between photovoltaic panel group and MPPT maximum power point tracking circuit Diode, and the counnter attack diode being arranged between MPPT maximum power point tracking circuit and charging circuit.

Further, photovoltaic panel group includes at least two photovoltaic panels, the electric energy of at least two photovoltaic panels Output end is connected in parallel to MPPT maximum power point tracking circuit, and photovoltaic panel is the efficient polycrystalline silicon glass laminates sun Can cell panel.

Further, in addition to:It is arranged on the charging control between MPPT maximum power point tracking circuit and charging circuit Circuit processed, and the battery detection circuit being connected with charging control circuit;Charging control circuit is used for maximum The output electric energy of power points tracking circuit carries out charge control, and battery detection circuit is used for the electricity to device battery Cell voltage and the charging current of charging control circuit output are detected, charge control is controlled according to testing result Circuit.

Further, charging control circuit includes the on-off circuit and master chip being made up of multiple metal-oxide-semiconductors, The grid-control voltage of multiple metal-oxide-semiconductors is provided by master chip.

Further, MPPT maximum power point tracking circuit is arranged on photovoltaic charged mobile phone in the form of integrated circuit In set.

Further, MPPT maximum power point tracking circuit is used to detect that the environment temperature of photovoltaic panel group and illumination are strong Spend to realize the environment measuring circuit of MPPT maximum power point tracking, and synchronous pressure drop circuit;Synchronous pressure drop circuit is used In the output voltage progress pressure drop processing under the control in environment measuring circuit to photovoltaic panel group.

Further, environment measuring circuit includes the thermistor and/or temperature detection for being used to detect environment temperature Device, the charging management chip for detecting photovoltaic panel group power output.

Further, thermistor is after non-linear thermistor and build-out resistor are arranged side by side, with divider resistance string Connection is formed.

Further, MPPT maximum power point tracking circuit includes:Synchronous pressure drop circuit and control circuit, synchronous pressure Dropping circuit is used to carry out the output voltage of photovoltaic panel group pressure drop processing, and control circuit is used to detect building ring Border, synchronous pressure drop circuit is controlled according to working environment.

Further, control circuit is used for by the real-time collecting work environment of control chip, according to working environment Opening with shut-off to realize MPPT maximum power point tracking for synchronous pressure drop circuit is controlled, working environment includes external world's ring Border temperature, device battery electricity voltage, the output voltage electric current of photovoltaic panel group.

Beneficial effects of the present invention:

The invention provides a kind of photovoltaic charged cell-phone cover, pass through the integrated MPPT maximum power point tracking in cell-phone cover Circuit tracing photovoltaic panel maximum power point, realizes maximum power output, such charging voltage and electric current can Rational matching is accessed, solving the photovoltaic design of existing mobile phone protective cover needs individually to carry control device The problem of, meanwhile, the charging interval is shortened, charge efficiency is improved, the usage experience of user is enhanced.

Brief description of the drawings

The structural representation for the photovoltaic charged cell-phone cover that Fig. 1 provides for first embodiment of the invention;

The schematic diagram for the photovoltaic charged cell-phone cover that Fig. 2 provides for second embodiment of the invention;

The structural representation for the photovoltaic charged cell-phone cover that Fig. 3 provides for third embodiment of the invention;

Fig. 4 is the circuit connection diagram of photovoltaic charged cell-phone cover in third embodiment of the invention;

Fig. 5 is that charging circuit opens the light pipe change schematic diagram in third embodiment of the invention;

The structural representation for the photovoltaic charged cell-phone cover that Fig. 6 provides for fourth embodiment of the invention.

Embodiment

Further annotation explanation is now made to the present invention by way of embodiment combination accompanying drawing.

First embodiment:

The structural representation for the photovoltaic charged cell-phone cover that Fig. 1 provides for first embodiment of the invention, can by Fig. 1 Know, in the present embodiment, the photovoltaic charged cell-phone cover 1 that the present invention is provided includes:For converting light energy into The photovoltaic panel group 11 of electric energy, the MPPT being connected with photovoltaic panel group (Maximum Power Point Tracking, MPPT maximum power point tracking) circuit 12, charging circuit 13;MPPT circuits 12 are used to track The maximum power point of photovoltaic panel group 11, and by the electric energy of maximum power point by charging circuit 13 export to Device battery.

In certain embodiments, the photovoltaic charged cell-phone cover 1 in above-described embodiment also includes:It is arranged on photovoltaic Counnter attack diode between panel group and MPPT circuits, and be arranged on MPPT circuits and charging circuit it Between counnter attack diode.

In certain embodiments, the photovoltaic panel group 11 in above-described embodiment includes at least two photovoltaic panels, The electric energy output end of at least two photovoltaic panels is connected in parallel to MPPT circuits, and photovoltaic panel is high-efficiency polycrystalline Silica glass is laminated solar panel.

In certain embodiments, the photovoltaic charged cell-phone cover 1 in above-described embodiment also includes:It is arranged on MPPT Charging control circuit between circuit and charging circuit, and the battery detecting electricity being connected with charging control circuit Road;Charging control circuit is used to carry out charge control, battery detection circuit to the output electric energy of MPPT circuits The charging current exported for the cell voltage to device battery and charging control circuit is detected, according to inspection Survey output control charging control circuit.

In certain embodiments, the charging control circuit in above-described embodiment includes what is be made up of multiple metal-oxide-semiconductors On-off circuit and master chip, the grid-control voltage of multiple metal-oxide-semiconductors are provided by master chip.

In certain embodiments, the MPPT circuits 12 in above-described embodiment are set in the form of integrated circuit In photovoltaic charged cell-phone cover.

In certain embodiments, the MPPT circuits 12 in above-described embodiment are used for the ring for detecting photovoltaic panel group Border temperature and intensity of illumination are to realize MPPT environment measuring circuit, and synchronous pressure drop circuit;Synchronous pressure drop Circuit is used under the control of environment measuring circuit carry out pressure drop processing to the output voltage of photovoltaic panel group.

In certain embodiments, the environment measuring circuit in above-described embodiment includes being used to detect environment temperature Thermistor and/or temperature detector, the charging management chip for detecting photovoltaic panel group power output.

In certain embodiments, the thermistor in above-described embodiment is by non-linear thermistor and build-out resistor After side by side, connect to be formed with divider resistance.

In certain embodiments, the MPPT circuits 12 in above-described embodiment include:Synchronous pressure drop circuit and control Circuit processed, synchronous pressure drop circuit is used to carry out pressure drop processing to the output voltage of photovoltaic panel group, controls circuit For detecting working environment, synchronous pressure drop circuit is controlled according to working environment.

In certain embodiments, the control circuit in above-described embodiment is used to gather work in real time by control chip Make environment, opening and turning off to realize MPPT, building ring for synchronous pressure drop circuit is controlled according to working environment Border includes ambient temperature, device battery electricity voltage, the output voltage electric current of photovoltaic panel group.

Further annotation explanation is done to the present invention in conjunction with concrete application scene.

Second embodiment:

The present embodiment is for the inefficient defect of traditional photovoltaic charged scheme, due to its Control system resolution Not high, charge efficiency is low and for the big area of the four seasons temperature difference, and photovoltaic charged efficiency will be by very big Influence.In the time is applied, because photovoltaic panel has its distinctive photovoltaic charged curve, most suitable fills Piezoelectric voltage and electric current are exactly that at its maximum power point, such charging voltage and electric current can be accessed reasonably Matching, and then shorten the charging interval, improve charge efficiency.

The mobile phone protective cover device that the present invention is provided includes two pieces of photovoltaic panels of mobile phone protective cover positive and negative, MPPT circuits, charging control circuit, detection circuit, charging circuit, it is characterized in that:Photovoltaic panel is exported Electric energy be input in charging circuit and be re-filled with battery of mobile phone by maximal power tracing circuit.This light Underlying surface plate uses technology maturation, the efficient polycrystalline silicon glass laminates solar panel of low price, its built in light Fulgurite, conversion efficiency can reach 15%, compared to 8% more current conversion efficiency, improve a lot, And reduce 10% than traditional solar panel manufacturing cost, solve at one stroke it is portable and efficiently both not The problem that can be got both.

Present invention employs the MPPT circuits with wide temperature-compensating constant pressure type, real-time tracing solar panel Maximum power point, to play maximum output effect of photovoltaic panel.By to the defeated of MPPT peripheral circuits Go out and feed back match control, realize under the conditions of certain temperature, the peak power output of photovoltaic panel is followed in real time Intensity of illumination changes;By increasing negative temperature coefficient resister, realize under the conditions of certain intensity of illumination, photovoltaic The peak power output of panel follows ambient temperature to change in real time, is combined by the two and causes MPPT Circuit can be according to extraneous intensity of illumination and the peak power of the change real-time tracking photovoltaic panel of environment temperature Point, realizes the output of its peak power.MPPT maximum power point tracking circuit can be defeated under peak power dotted state Go out corresponding voltage and current, precharge, constant current, constant pressure and floating charge flow can be realized to battery, most It is powerful to export again by charging control circuit to charging mobile phone battery.This output control method is for outer Boundary's illumination is strong and weak and temperature change can improve charging rate and efficiency with maximum power output, solves Conventional photovoltaic generating-charging is slow, the present situation of inefficiency, and its practicality, reliability can be improved, And circuit design is simple, be integrated on mobile phone protective cover, this easy to carry for traveller and charging Time is reduced.

The technical problems to be solved by the invention are high for the how convenient use photovoltaic generation of people in travelling Effect, the scene quickly charged the phone, it is proposed that mobile phone photovoltaic panel peak power efficiently, inexpensive Charging technique.Solar energy is changed into electric energy, by maximal power tracing circuit so that the voltage of output with Electric current is input in battery of mobile phone by charging control circuit.Present embodiments provide a kind of with peak power The mobile phone protective cover of photovoltaic generation function, specifically refer to Fig. 2, and Fig. 2 show the present embodiment and provides design Mobile phone protective cover schematic diagram, wherein numeral 201,202 represent be tow sides on mobile phone protective cover the sun Can photovoltaic panel, due to the limitation of mobile phone protective cover size, panel uses efficient polycrystalline silicon here Glass laminates solar panel, its built-in photoelectric tube, conversion efficiency is higher.In order to be depressured to battery of mobile phone Charge and be supplied to the supply voltage needed for control chip, use operating voltage for 9V herein, operating current is 220mA photovoltaic panel, and tow sides are connected in parallel using two pieces of photovoltaic panels on mobile phone protective cover, Reach decompression to the ideal operation condition needed for battery of mobile phone and charging control circuit as the specified chargings of 5V using this Voltage and the specified charging currents of 440mA.What numeral 5 was represented is to place interior of mobile phone space;Numeral 203 In space be to stay to do placement integrated circuit, because the design circuit brief introduction efficiently, space-consuming less, institute It is feasible to be integrated on mobile phone protective cover;What numeral 204 was represented is charging circuit, as long as in use Circuit is accessed or touched mobile phone charging port.

3rd embodiment:

Each block schematic illustration of the embodiment function is realized shown in Fig. 3, from the figure 3, it may be seen that photovoltaic panel 11 The electric energy of output is output to master chip in charging control circuit, MPPT circuits 12 by MPPT circuits 12 The input voltage of 5V-28V scopes is supported, sets 5V voltage to give in 2.1V-26V output voltage ranges Charging control circuit 14, wherein MPPT circuits 12 detect the real-time acquisition testing of circuit 15 by panel temperature Environment temperature and intensity of illumination on panel, to follow the trail of maximum power point, realize maximum charge efficiency.Charging control A series of on-off circuit that circuit 14 processed is made up of metal-oxide-semiconductors, its grid-control voltage is provided by master chip, Here the master chip of charging control circuit 14 can be single-chip microcomputer, RAM chip or other can play control work( The IC chip of energy.Battery voltage detection circuit 16 is that the electric energy for exporting charging control circuit is carried out Negative-feedback is detected, then is input in IC control master chips, makes it that reasonably metal-oxide-semiconductor be opened and closed It is disconnected, the problem of charging voltage fluctuation is with battery electric quantity saturation is prevented, the electric energy of detection output passes through charging circuit Mobile phone port is connected to charge the battery.Integral control circuit small volume of the present invention, is designed at the protective case back side, Without carrying extra charging device.

Fig. 4 gives a kind of mobile phone protection with peak power photovoltaic generation function of preferred embodiment of the present invention The whole integrated circuit diagram of set.In Fig. 4,

What module 401 was represented is to be connected in parallel collection solar energy using two pieces of photovoltaic panels S1, S2 Carry out opto-electronic conversion, photovoltaic panel output end series connection counnter attack diode VD1, VD2, it is therefore an objective to prevent follow-up Electric current to photovoltaic panel adverse current.Here use operating voltage for 9V, operating current be 220mA polysilicons too It is positive can panel, two pieces be connected in parallel after obtain 9V rated output voltages and 440mA output-current ratings, then Charged the phone after the synchronous Buck circuits in MPPT circuits are depressured to 5V.

What module 402 was represented is the maximum photovoltaic power point tracking circuit of wide temperature-compensating, passes through Nonlinear thermal Quick resistance RTC is in parallel with build-out resistor R4, then is connected with R1, R2 and obtain the temperature-sensitive of approximately linear curve Resistance gathers environment temperature on panel, temperature value of this collection with after divider resistance R1 and the R2 partial pressure Value corresponding voltage, current value are exported under maximum power state to adjust, instantiation uses RTC here Thermistor is detected, not using TS temperature detectors, and the present invention can be realized using any temperature detector, It is not limited to this.Q1, Q2, L1, C4 and C5 constitute synchronous buck Buck circuit-modes, work as cell panel Power output because intensity of illumination change when, Charge Management BQ chips can automatically control external switch pipe, come The reduction charging current of appropriateness maintains the constant of charging voltage, if solar panel can not provide enough work( When rate is exported, charging current will be reduced to zero.Sampling resistor Rs selects different electricity according to required electric current Resistance.Resistance R8, R9, R10 and metal-oxide-semiconductor Q5 are used for setting constant-voltage charge voltage and float charge voltage, Constant-voltage charge voltage is set to 5V, and Q5 is turned on during constant-voltage charge, and lamp D1 is bright;Floating charge voltage is set For 4.35V, Q5 is turned off during floating charge, and lamp D2 is bright;If there is undesirable condition in system in charging process, Lamp D1, D2 are simultaneously bright, remind and stop charging, it is ensured that the reliability service of whole system.Module 402 is defeated Go out end series connection counnter attack diode VD3, it is therefore an objective to prevent subsequent current to module 402.

What module 403 was represented is charging control circuit and battery detection circuit, and the circuit design is further to pre- Charging and constant current, constant-voltage charge serve good control action.Battery voltage detection circuit is by R16, R17 With Ct composition, when the cell voltage detected be less than charging voltage, and charging current less than constant-current charge electricity During stream, the 3rd switching tube Q3 conductings, and pre-charge current is provided by R13, the 4th switching tube Q4 is then Shut-off;When charging current reaches more than constant-current charge electric current, Q3 is turned off, Q4 is opened;If charged When undesirable condition occurs in system in journey, control chip MCU (Micro Control Unit, micro-control unit) will Q3 and Q4 are turned off, it is ensured that the safety of system.

Output end switching tube drive waveforms figure and charging current ripple in MPPT maximum power point tracking circuit shown in Fig. 5 Shape figure.First switch pipe Q1, second switch pipe Q2 and inductance L1 composition synchronous buck Buck circuits, its Gate drive voltage VGS (Q1), VGS (Q2) are in alternating conductive state, and leave certain dead time, So that second switch pipe Q2 realizes that no-voltage is turned on, intrinsic switching frequency is used here for f=600KHz, is passed through The charging current for crossing energy storage inductor L1 can reach 400mA.

The preferred embodiment design parameter of the present invention is as follows:Solar panel rated operational voltage is set to 9VDC; Output voltage setting is 5VDC;Output current is master chip use in 220mA, maximum power control circuit BQ24650, output current maximum is set to 1A;Thermistor RTC is 470K Ω/25 DEG C;Partial pressure electricity Resistance R1 is 64.9K, and R2 is 10K;Inductance L1 is 15uH;C4 is 10uF;Detection resistance Rs is 40mΩ;First switch pipe Q1, second switch pipe Q2 use integrated metal-oxide-semiconductor Si7288, switching frequency For 600KHz;Output matching resistance R8 is that 34.8K, R9 are that 10.7K, R10 are 10K;Q3、Q4、 Q5 is 2N7002;R16 is 30K;R17 is 10K;Main control chip MCU uses single-chip microcomputer STC15F104W.It is photovoltaic charged than traditional based on the use maximum power point tracking circuit of the present invention Very high 20%-30% of efficiency or so, this is for applying the low power photovoltaic panel on mobile phone protective cover to have Very big development significance.

Fourth embodiment:

For the utilization of photovoltaic efficiency, method simple and easy to apply can be also used, it is as indicated with 6, directly sharp With the main control chip MCU controllers 17 with ADC acquisition functions, voltage, the electricity of solar panel are gathered Flow valuve, the electricity of battery of mobile phone and ambient temperature control synchronous Buck circuits 18, realize maximum Power point tracking (MPPT) function.The peak power of photovoltaic is followed the trail of using this scheme, is that main control chip is real-time Ambient temperature, the voltage and current value of photovoltaic panel are gathered, to calculate the power output of panel, is passed through This time detect that obtained power and the power of last time are compared, determine voltage under relatively high power state, Current value, main control chip controls the switching tube in synchronization Buck circuits to give mobile phone electricity under maximum power state Charge in pond.Charging voltage in this control program can not keep voltage constant for constant-voltage charge;Charging electricity Stream can not keep electric current constant for constant-current charge, and changed power scope is big, and the charging interval is longer, effect Also not as good as the maximum power tracing effect of preceding method in rate.

In actual applications, the maximal power tracing circuit provided using 3rd embodiment is extraneous in real time to gather light According to photovoltaic panel maximum power point is tracked with environment temperature, maximum power output is realized, by MPPT The output feedback match control of peripheral circuit, is realized under the conditions of certain temperature, the maximum output of photovoltaic panel Power follows intensity of illumination to change in real time;By increasing negative temperature coefficient resister, realize in certain intensity of illumination Under the conditions of, the peak power output of photovoltaic panel follows ambient temperature to change in real time, passes through the two knot Conjunction enables MPPT circuits according to the change real-time tracking photovoltaic panel of extraneous intensity of illumination and environment temperature Maximum power point, realize the output of its peak power.MPPT maximum power point tracking circuit can be in peak power Corresponding voltage and current is exported under dotted state, can realize that precharge, constant current, constant pressure and floating charge are filled to battery Electric current journey, peak power is exported again by charging control circuit to charging mobile phone battery.This output control Method for ambient light according to strong and weak and temperature change can with maximum power output, improve charging rate and Efficiency, shortens the charging interval.

Fourth embodiment mainly gathers ambient temperature, battery electric quantity voltage in real time by MCU control chips Synchronous Buck circuit debuggings and shut-off are controlled with photovoltaic voltage, electric current, maximum power output is realized.This fills Electrical efficiency increases relative to traditional scheme, but power output excursion is big, and the charging interval is still It is longer.

In summary, by the implementation of the present invention, at least there is following beneficial effect:

The invention provides a kind of photovoltaic charged cell-phone cover, pass through the integrated MPPT maximum power point tracking in cell-phone cover Circuit tracing photovoltaic panel maximum power point, realizes maximum power output, such charging voltage and electric current can Rational matching is accessed, solving the photovoltaic design of existing mobile phone protective cover needs individually to carry control device The problem of, meanwhile, the charging interval is shortened, charge efficiency is improved, the usage experience of user is enhanced.

It the above is only the embodiment of the present invention, any formal limitation not done to the present invention, It is every according to the present invention technical spirit embodiment of above is made any simple modification, equivalent variations, With reference to or modification, still fall within the protection domain of technical solution of the present invention.

Claims (11)

1. a kind of photovoltaic charged cell-phone cover, it is characterised in that including:For converting light energy into electric energy Photovoltaic panel group, the MPPT maximum power point tracking circuit being connected with the photovoltaic panel group, charging circuit;It is described MPPT maximum power point tracking circuit is used to tracking the maximum power point of the photovoltaic panel group, and by the maximum work The electric energy of rate point is exported to device battery by the charging circuit.
2. photovoltaic charged cell-phone cover as claimed in claim 1, it is characterised in that also include:It is arranged on Counnter attack diode between the photovoltaic panel group and the MPPT maximum power point tracking circuit, and it is arranged on institute State the counnter attack diode between MPPT maximum power point tracking circuit and the charging circuit.
3. photovoltaic charged cell-phone cover as claimed in claim 1, it is characterised in that the photovoltaic panel group Including at least two photovoltaic panels, the electric energy output end of at least two photovoltaic panel is connected in parallel to described MPPT maximum power point tracking circuit, the photovoltaic panel is efficient polycrystalline silicon glass laminates solar panel.
4. photovoltaic charged cell-phone cover as claimed in claim 1, it is characterised in that also include:It is arranged on Charging control circuit between the MPPT maximum power point tracking circuit and the charging circuit, and filled with described The battery detection circuit of electric control circuit connection;The charging control circuit be used for the maximum power point with The output electric energy of track circuit carries out charge control, and the battery detection circuit is used for the electricity to the device battery Cell voltage and the charging current of charging control circuit output are detected, the charging is controlled according to testing result Control circuit.
5. photovoltaic charged cell-phone cover as claimed in claim 4, it is characterised in that the charge control electricity Road includes the on-off circuit and master chip being made up of multiple metal-oxide-semiconductors, the grid control of the multiple metal-oxide-semiconductor Voltage processed is provided by the master chip.
6. photovoltaic charged cell-phone cover as claimed in claim 1, it is characterised in that the maximum power point Tracking circuit is arranged in the photovoltaic charged cell-phone cover in the form of integrated circuit.
7. the photovoltaic charged cell-phone cover as described in any one of claim 1 to 6, it is characterised in that described MPPT maximum power point tracking circuit is used to detect the environment temperature and intensity of illumination of the photovoltaic panel group to realize most The environment measuring circuit of high-power point tracking, and synchronous pressure drop circuit;The synchronous pressure drop circuit is used in institute State and pressure drop processing is carried out to the output voltage of the photovoltaic panel group under the control of environment measuring circuit.
8. photovoltaic charged cell-phone cover as claimed in claim 7, it is characterised in that the environment measuring electricity Road includes the thermistor and/or temperature detector for being used to detect environment temperature, for detecting the photovoltaic panel The charging management chip of group power output.
9. photovoltaic charged cell-phone cover as claimed in claim 8, it is characterised in that the thermistor by After non-linear thermistor and build-out resistor are arranged side by side, connect to be formed with divider resistance.
10. the photovoltaic charged cell-phone cover as described in any one of claim 1 to 6, it is characterised in that described MPPT maximum power point tracking circuit includes:Synchronous pressure drop circuit and control circuit, the synchronous pressure drop circuit are used for Pressure drop processing is carried out to the output voltage of the photovoltaic panel group, the control circuit is used to detect working environment, The synchronous pressure drop circuit is controlled according to the working environment.
11. photovoltaic charged cell-phone cover as claimed in claim 10, it is characterised in that the control circuit For by the real-time collecting work environment of control chip, according to the working environment control synchronous pressure drop electricity Road opens with shut-off to realize MPPT maximum power point tracking, and the working environment includes ambient temperature, sets Standby battery electric quantity voltage, the output voltage electric current of the photovoltaic panel group.
CN201610122510.5A 2016-03-03 2016-03-03 A kind of photovoltaic charged cell-phone cover CN107149250A (en)

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CN201610122510.5A CN107149250A (en) 2016-03-03 2016-03-03 A kind of photovoltaic charged cell-phone cover

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CN201610122510.5A CN107149250A (en) 2016-03-03 2016-03-03 A kind of photovoltaic charged cell-phone cover
PCT/CN2016/097199 WO2017148118A1 (en) 2016-03-03 2016-08-29 Photovoltaic charging cellphone case

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WO (1) WO2017148118A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019140552A1 (en) * 2018-01-16 2019-07-25 海能达通信股份有限公司 Holder for mobile terminal

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